Guth,David, & Marsh,Charles. (2017). Public relations: A values-driven approach (6th.). Pearson.
Lua i Stíl Chicago (17ú heag.)Guth,David, agus Marsh,Charles. Public Relations: A Values-driven Approach. 6th. New York: Pearson, 2017.
Lua MLA (9ú heag.)Guth,David, agus Marsh,Charles. Public Relations: A Values-driven Approach. 6th. Pearson, 2017.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.